baber/WOPTO huggingface dataset:
Patent WO-02099390-A1 (WO)
Title: Verfahren zum prüfen der biegefestigkeit eines stehend verankerten, länglichen objektes
Inventor: RUDOLF GEORG
IPC: G01M5/00
Filed: 2002-06-05
Abstract: Bei dem Verfahren zum Prüfen der Biegefestigkeit eines stehend verankerten, länglichen Objektes (1) mit zu prüfenden Objektbereich wenigstens angenähert in Objektlängsrichtung verlaufenden Tragelementen wird das Objekt (1) oberhalb seiner Verankerung (2) mit einer ansteigenden Kraft zur Erzeugung eines Biegemomentes belastet, wobei aus dem mechanischen Verhalten des Objektes (1) gewonnene Messwerte (24) als Aussage für seine Biegefestigkeit ausgewertet werden. Bei dem Belastungsvorgang im Objekt (1) entstehende akustische Schwingungen werden als Schallereignisse (K1, K2, K3) messtechnisch erfasst und die jeweligen Schallereignisse als Messwerte analysiert und zur Ermittung der Biegefestigkeit des Objektes (1) ausgewertet.
Patent WO-03000486-A1 (WO)
Title: Verfahren und vorrichtung zum formen einer längsgewellten bahn
Inventor: DRUT HENRY
IPC: B31F1/22
Filed: 2002-06-06
Abstract: Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur kontinuierlichen Umformung einer ebenen zu einer längsgewellten Bahn unter Vermeidung von Falten und Rissen in der Bahn. Das erfindungsgemässe Verfahren wird so durchgeführt, dass die Bahn im Umformbereich räumlich stetig geführt und verformt wird, indem jede in der Bahnmittelfläche liegende, in Transportrichtung verlaufend gedachte Lillie während der Formung im Umformbereich dadurch annähernd den gleichen Weg zurücklegt, dass mit fortschreitender Formung die nicht am Rand liegenden Bahnlinien eine Auslenkung senkrecht zur Bahnebene erfahren, deren Maximalwert um so grösser ist, je weiter die jeweilige Bahnlinie vom Rand der Bahn entfernt ist. Zur Erhaltung einer konstanten Bahnlänge wird also eine geringere Auslenkung in einer Richtung durch eine stärkere Auslenkung in einer anderen Richtung kompensiert, wodurch alle Bahnlinien im Umformbereich annähernd den gleichen Weg zürücklegen.
Patent WO-2004016923-A1 (WO)
Title: Verfahren und vorrichtung zum steuern der antriebseinheit eines fahrzeugs
Inventor: GLORA MICHAEL
IPC: G05G1/30
Filed: 2003-02-03
Abstract: Es werden ein Verfahren und eine Vorrichtung zum Steuern der Antriebseinheit eines Fahrzeugs vorgeschlagen, die einen Leerweg und einen Totweg bei Interpretation der Stellung des Fahrpedals zur Bildung einer Sollbeschleunigung verhindern. Dabei wird aus einer Stellung eines Bedienelementes (1), insbesondere eines Fahrpedals, ein Beschleunigungswunsch abgeleitet und in Abhängigkeit des Beschleunigungswunsches ein Sollwert für eine Ausgangsgröße der Antriebseinheit gebildet. In Abhängigkeit eines momentanen Fahrwiderstandes wird ein Minimalwert und/oder ein Maximalwert für die Beschleunigung des Fahrzeugs ermittelt. Der Minimalwert und/oder der Maximalwert wird jeweils einer Grenze eines Stellbereiches für die Stellung des Bedienelementes (1) zugeordnet.
Patent WO-03093039-A1 (WO)
Title: Dreiecklenker
Inventor: BUHL REINHARD
IPC: F16C11/06
Filed: 2003-02-12
Abstract: Es wird ein Dreiecklenker (1) für die Achsaufhängung von Kraftfahrzeugen zur gelenkigen Anbindung einer Fahrzeugachse an einen Fahrzeugrahmen mit zwei Lenkerarmen (2, 3), die in einem durch die Lenkerarme (2, 3) gemeinsam gebildeten Gelenkgehäuse (6) für ein Gummi-Metalllager (11) zur Festlegung des Dreiecklenkers (1) an der Fahrzeugachse miteinander verbunden sind, wobei das Gummi- Metalllager (11) eine mit einer Kugelfläche versehene Schwenkachse (12) und einen die Schwenkachse (12) zumindest im Bereich der Kugelfläche umgreifenden Elastomerkörper (14), welcher in einer innerhalb des Gelenkgehäuses (6) befindlichen Ausnehmung (16) aufgenommen ist, aufweist, vorgestellt, bei dem innerhalb der Ausnehmung (16) des Gelenkgehäuses (6) an den axialen Außenseiten des Elastomerkörpers (14) zwei Andruckringe (17, 18) angeordnet sind, welche durch eine Spannvorrichtung unter Zwischenschaltung von an den einander abgewandten Außenseiten der Andruckringe (17, 18) anliegenden Anschlagflächen ( 22) des Gelenkgehäuses (6) zueinander bewegbar sind. Durch diese spezielle Gestaltung lässt sich das Gummi- Metalllager sowohl in axialer als auch in radialer Richtung vorspannen, so dass durch die dadurch erzielte höhere Steifigkeit größere Kräfte aufgenommen werden können.
Patent WO-03098535-A1 (WO)
Title: Fingererkennungsmodul im dünnfilmaufbau, mit resistiven temperaturempfindlichen elementen
Inventor: BUESTGENS BURKHARD
IPC: G06T1/00
Filed: 2003-05-15
Abstract: Die Erfindung beschreibt ein Fingererkennungsmodul, das aus einem Substrat aus einem zumindest auf seiner Oberseite elektrisch isolierenden und thermisch zumindest teilweise isolierenden Material besteht. Dieses Substrat erhält auf seiner Oberfläche einen Verbund aus strukturierten Dünnfilmen, welcher direkt ein Meßfeld auf der Oberfläche des Substrates zum Messen eines Fingerabdruckes bildet, bestehend aus einem Array aus resisitiven, temperturabhängigen Elementen und welcher Leiterbahnen enthält, die die resisitiven, temperturabhängigen Elemente mit mind. einem auf dem Substrat außerhalb des Meßfeldes befindlichen Anschlußfeld verbinden und Teil des Verbundes aus strukturierten Dünnfilme sind. Das Substrat enthält weiter mind. einen mikroelektronischen Schaltkreis, der mit dem mind. einen Anschlußfeld elektrisch verbunden ist und der Schaltkreise enthält, mit denen die Dünnfilmstrukturen zur Beheizung der resistiven, temperaturempfindlichen Elemente angesteuert, die resistiven, temperaturempfindlichen Elemente ausgelesen und Daten weitergeleitet werden.
Patent WO-2004001657-A1 (WO)
Title: System zum datenaustausch zwischen mindestens zwei kontaktlosen datenträgern
Inventor: BERGER DOMINIK
IPC: G06K19/07
Filed: 2003-05-20
Abstract: Die Erfindung betrifft ein System zum Datenaustausch zwischen mindestens zwei kontaktlosen Datenträgern, insbesondere kontaktlose Chipkarten, wobei mindestens einer der kontaktlosen Datenträger (1) den Datenaustausch als Master steuert und der zumindest andere Datenträger (2) dabei als Slave gesteuert wird.
Patent WO-2004019209-A1 (WO)
Title: Vorrichtung zum zugriff auf ein fahrzeugssteuersystem über eine drahtlose verbindung
Inventor: BOLZ PETER
IPC: H04L12/28
Filed: 2003-06-10
Abstract: Es wird eine Vorrichtung zum Zugriff auf ein Fahrzeugsteuersystem über eine drahtlose Verbindung (3) vorgeschlagen, wobei ein Gateway-Steuereinheit (5) vorgesehen ist, welches einerseits an wenigstens einen Fahrzeug-Bus (6), andererseits an ein Funknetz (3) angebunden ist, wobei das Gateway-Steuereinheit (5) frei konfigurierbar über die Funkverbindung (3) ausgestaltet ist, so dass im laufenden Betrieb Software im Mikrocomputer der Gateway-Steuereinheit (5) ergänzt werden kann.
Patent WO-2004035337-A1 (WO)
Title: Verdeckkastendeckel für ein cariolet-fahrzeug mit versenkbarem verdeck
Inventor: HABACKER NORBERT
IPC: B60J7/20
Filed: 2003-10-04
Abstract: Ein Cabriolet-Fahrzeug mit versenkbarem Verdeck, insbesondere Faltverdeck (2), weist einen dieses in Öffnungsstellung aufnehmenden Verdeckkasten (6) auf. Dieser ist durch einen in der heckseitigen Karosseriekontur verlaufenden Verdeckkastendeckel (8) verschließbar. Dieser ist einerseits mittels zumindest einer Scharniervorrichtung (7) mit einem Tragteil (15) an der Fahrzeugkarosserie schwenkbar abgestützt. Andererseits wirkt der Deckel (8) mit zumindest einer im Bereich eines randseitigen Verdeckstoffspannbügels (9) des Verdecks (2) vorgesehenen Schließvorrichtung (10) zusammen, in deren Bereich der Verdeckkastendeckel (8) mit dem Verdeckstoffspannbügel (9) durch eine Schwenk-Schub-Bewegung verriegelbar bzw. in entgegengesetzter Richtung entriegelbar ist. Erfindungsgemäß ist als Antrieb des Verdeckkastendeckels (8) zumindest ein mit einem Abstand (A) zur Scharniervorrichtung (7) abgestützter, schwenkbeweglich mit dem Verdeckkastendeckel (8) verbundener Hubantrieb (11) vorgesehen, wobei der Verdeckkastendeckel (8) im Bereich der Scharniervorrichtung (7) relativ zum Tragteil (15) schwenkbar ausgebildet ist.
Patent DE-1807888-A1 (DE)
Title: Regeneration of strongly acid cation-exchange resins in
Inventor: FRANCIS RYAN LEO
IPC: B01J49/00
Filed: 1968-11-08
Abstract: A mixture of H2SO4 and a cpd. (I) is used to regenerate strongly acid, finely divided, cation-exchange resins in the H-form. (I) is cpd. which forms halide ions (concn. at least 0.01 moles/l.) and forms a water-soluble sulphate; preferably HCl aq. (conc. 0.01-2.0 moles/l) or a chloride (concn. 0.01-0.5 moles/l). Suppression of the precipitation of CaSO4. Divinyl-benzol-styrene-copolymer cation exchange resin, used for water softening, contained 75% Ca2+ and 25% Na+. Treatment with 0.35N H2SO4 in mole-ratio 1.6:1 gave considerable precipitation of CaSO4 resulting in contamination of the resin. Treatment with H2SO4 with sufficient HCl aq. to give 0.02M HCl concn. gave no precipitate.
Patent DE-1809403-A1 (DE)
Title: Rope making machine with semi automatic feed
Inventor: GENSICKE WOLFGANG
IPC: D07B7/16
Filed: 1968-11-16
Abstract: Reels are held with axes parallel by displaceable spindles in star supports; spindles are automatically opened and closed. Lifting mechanism or tables are provided for reels. a reel magazine lies at 90 degrees to machine axis under floor and has lifting table rotatable through 90 degrees at input end, and at other end lifting table movable in same plane. Above floor level under cabling cage are 2 more lifting tables for delivering and inserting the reels.
Patent DE-1816326-A1 (DE)
Title: Sealing or decorative strip
Inventor: BOECKMANN ALFRED
IPC: B60J10/235
Filed: 1968-12-21
Abstract: A U-shaped cover strip is connectable at its side-pieces with a sealing profiled strip (esp. of chloroprene) consisting of 2 tongues at right angles, one of which encircles the edge region of the corresponding side-piece. At least one of the tongue has at least one hollow space running longitudinally in the profile.
Patent DE-1914639-A1 (DE)
Title: Preservative for fish fillets
Inventor: COURTIAL WOLFGANG
IPC: A23B4/023
Filed: 1969-03-22
Abstract: Fish fillets are preserved by a process which makes use of 3 known techniques, that is, the simultaneous use of mild salts, preservatives and low temp. The concentration ratio of salt to preservative is 1:2 to 1:200, pref. 1:10 to 1:100. The effect is a synergistic one and the method is particularly effective against bacteria. Examples illustrate the use of sodium chloride, with sodium benzoate, calcium sorbate, hexamethylene tetra-amine in water, at a temperature of + 4 degrees C.
Patent DE-1921175-A1 (DE)
Title: Automatic dispenser for contraceptive pills
Inventor: REIFF GEROLD
IPC: A61J7/04
Filed: 1969-04-25
Abstract: A magazine for the pills if fitted to the case of a conventional clock, either with a multi-week clockwork movement or electrically driven, together with a dispensing chute so that one pill is delivered to the chute in each 24 hours, where it is held ready for taking by the user. An alarm or signal device indicates that the pill has been passed to the chute and is switched off/reset by taking out the pill from the dispenser. The magazine is specif. a rotary horizontal disc with a number of peripheral holes each of which passes, at daily intervals, over a vertical tube with a retainer at its bottom end associated with a reset mechanism for the alarm.
Patent DE-1934145-A1 (DE)
Title: Determination of carbon potential in the - carburisation of steel
Inventor: ECKHARD KOLLMANN DR-ING
IPC: C23C8/22
Filed: 1969-07-05
Abstract: Method is for determination of the carbon potential of the carburisation gas in the automatic production of steel. An indication and control signal for the potential is obtained from the CO and CO2 content of the carburisation gas and the pick-up signals proportional to its temp. CO and CO2 signals are combined with a value determined from the temp. signal in accordance with CN=a A2/B xg (t) CN being the signal accorded to C potential, A the CO signal, B the CO2 signal, a constant, and g (t) an expression of b - d t./et + f Constants are b, d,e, and f, and temp. value t is a linear function of the temp., the initial value of the temp. region being O and the final value 1.
Patent DE-1942524-A1 (DE)
Title: Heat-foamed silicate shaped parts by air - cushion transport of blanks through
Inventor: MECHEL FRIDOLIN DIPL-PHYS DR
IPC: C04B38/02
Filed: 1969-08-21
Abstract: Preliminarily shaped, (e.g. boards or extrudates) silicate material such as glass, clay, slag, pumice or basalt admixed with natural and/or synthetic blowing agents, is conveyed by means of an air cushion through a pusher type furnace where it is foamed at a temp. which pyroplastically softens the material. The air cushion is formed by several air streams which emerge from the floor and if necessary side surfaces of the furnace, and the pressures, flow-directions and flow-rates of which can be adjusted and set, if necessary by zones. Pref. foamable blank is provided, at least on lower side, with non-faomed skin, pref. enriched with heat-hardenable binders such as Al phosphates.
Patent DE-2025415-A1 (DE)
Title: Alpha-3-acylureido-substd-methyl penicillins antibacterial agents - esp against klebsiella
IPC: C07D333/24
Filed: 1970-05-25
Abstract: Penicillins of the following general formula and their non-toxic salts, including the various stereochem. forms derived from Cformula A is XCONY-, or where X,Y,Z and Q may be chosen from a considerable no. of designated gps. for which the original must be consulted B is: R4-6 are H, halogen, alkyl, alkoxy, alkyl-S/SO/SO2, NO2, dialkylamino, alkanoylamino, OH or alkanoyloxy. Prefd cpds include: D-alpha-(3-acetyl-3-allylureido) benzylpenicillin. They are active against Gram +ve and Gram -ve organisms, espec. Klebsiella.
Patent DE-2100220-A1 (DE)
Title: High porosity silica-base pearl prodn - for use as catalyst carrier
IPC: B01J21/00
Filed: 1971-01-05
Abstract: Silica or silicate filler is dispersed in an alkali silicate soln. in such an amt. that the resulting mixt. contains (w.r.t. dry susbtance) 10-50% of SiO2 from the silicate soln the suspension is then mixed with a mineral acid with intensive stirring (the acid is used in a 1-20 mol % excess w.r.t. alkali content of the silicate); the still liquid mixt. is treated with an MgO suspension (1-10 wt.% MgO w.r.t. SiO2); the droplets are allowed to gel, then dried and washed. The gelling is relatively slow until MgO is added. As a result a smaller specific surface area but a higher porosity is obtained compared with the known processes.
Patent DE-2141955-A1 (DE)
Title: Filling/closing system - partic for filling sausage skins
Inventor: NIEDECKER HERBERT DIPL ING
IPC: B65B9/15
Filed: 1971-08-21
Abstract: Appts. for the combined filling and closure of a packaging sleeve, partic. a sausage skin, comprising a retaining member which can be displaced against the inward pressure and pushed in the filling direction from the closed end of the packaging sleeve and on which the pressure is exerted during the filling operation with an alternating intensity.
Patent DE-2145701-A1 (DE)
Title: Continuous lipping thermoplastic containers - without risk of folds
Inventor: HAEBERLE WILHELM
IPC: B29C57/12
Filed: 1971-09-13
Abstract: A stack of the containers is laid on to a pair of horizontal rollers, one of which is grooved, and fed into an outer cylinder whose inner surface is spirally grooved. The width of the grooves of the latter reduces gradually towards its outlet end, where it is that of the required lip. The two inner rollers are internally heated. In addition, separate heaters are located inside and outside the outer cylinder, which is rotated. Once a container is gripped by the groove of the outer cylinder, it is carried through.
Patent DE-2146419-A1 (DE)
Title: Sulphur-vulcanisable elastomers - based on amorphous ethylene/propylene/diene polymer with residual unsatn
Inventor: BRODOWAY NICOLAS
IPC: C08L23/16
Filed: 1971-09-16
Abstract: Elastomers, which can be vulcanised with S, contain an amorphous copolymer consisting of (a) 25 - 75 wt.% units derived from ethylene, (b) 0.01 - 0.5 mole/kg copolymer of units derived from a 5 - 22C diolefin by polymsn. at both double bonds, (c) units derived from another diolefin with 1 double bond polymerising much less readily than the other, to give 0.1 - 4.0 mole/kg of C=C double bonds derived from the diolefin and the rest (d) units derived from propylene, as in parent patent. Constit. (b) contains 0.01 - 0.5 mole/kg of units derived from a 23 - 110C polyolefin with 2 polymerisable double bonds or 0.01 - 0.10 mole/kg units derived from a 20 - 62C diester of a 2-(hydroxyalkyl- or hydroxyalkenyl)-5-norbornene, the amt. of polyolefin or diester being is not >15 wt.% of the copolymer. These elastomers are used (in amt. of 10 - 30 wt. pts) in conjunction with polyunsatd. elastomers, esp. natural rubber (90 - 70 pts) to produce a S-vulcanised compsn. with improved cold flow props. and O3-resistance.
Patent DE-2152871-A1 (DE)
Title: Bitumen/rubber based adhesives - for reinforced rubbery roofing materials,contng heat-reactive resins and other additives
Inventor: ALBERS GUENTER
IPC: C09J123/22
Filed: 1971-10-23
Abstract: Adhesive compsn. for applying strips of reinforced rubber or rubbery material to a support, using a mixt. of butyl rubber, plasticiser, polyisobutylene, active fillers and tackifying resins, also contains 5-40 (wt.)% of heat-reactive resins, 1-10 (4-6)% MgO (both w.r.t. the elastomer) and 15-50 (20-25)% solvent (w.r.t. the total compsn.). The compsn. ensures good cohesion at high temp. and adequate elasticity at low temp. and has a viscosity suitable for spreading without the need to use a high proportion of solvent. The compsn. also contains bitumen.
Patent DE-2157951-A1 (DE)
Title: Plastic film separation - using focused infra-red rays to melt thermoplastic layer from woven carrier
Inventor: FEHRENSEN HERBERT
IPC: B29C65/14
Filed: 1971-11-23
Abstract: Using quartz halogen, gas discharge, arc or laser strip sources, a mirror focuses the rays into a burning point between two shrouding strips over the woven carrier and its polyester or polypropylene film cladding. The effect is to melt off the thermoplastic film, leaving a welded edge at the sides of the operating zone, while cooling circuits prevent the carrier from overheating and inhibiting the molten thermoplastic from clinging.
Patent DE-2209565-A1 (DE)
Title: Fat concentrate prepn - by spraying and cooling using additional second cold air stream
IPC: A23K20/158
Filed: 1972-02-29
Abstract: Cold gas-stream is kept at the aimed-at fat crystallisation temp. (which it tends to lose through uptake of heat of crystallisation) by a 2nd cold gas-stream in a fat or analogous material concentrate prepn. by (a) converting the fat into a pre-crystalline phase with supply of heat, (b) spraying the fat as =30 mu droplets under press. into a cold gas-stream having a temp and density adjusted to cause a cold-shock, and (c) with addn. of powdery fat-free additives introduced directly to the cold-gas stream in or against the direction of flow and opt with an imparted turbulent motion. Uses include concd. food for animal and human consumption e.g. cake mixes, basic compsns. for soups and sauces. Duration of cold-shock to which fat is exposed is adjusted, in a first treatment phase, so that the crystallised fat particles are not or at least not yet completely crystallised at core. Complete crystallisation is effected in a 2nd treatment phase in a cold gas-stream.
Patent DE-2233807-A1 (DE)
Title: Porcelain decoration - applied to biscuit-baked ware before sharp-firing
Inventor: KUNEL HEINRICH
IPC: C04B41/51
Filed: 1972-07-10
Abstract: Porcelain is decorated with metals, pref. non-ferrous metals, e.g. Sn, Cu ro Cn-Sn bronze, applied partic. in powdered form, to the biscuit-baked ware, or to porous and/or rough unglazed ware, e.g. by brushing on, printing spraying, contact, immersion or pulverising, followed by sharp firing. 2 or more different metals and/or alloys may be mixed with dye oils, glazes or water-glass. The molten and opt. polished and/or patinated metals are pre-coated with a protective varnish or with a soft glaze.
Patent DE-2317346-A1 (DE)
Title: Transporting large glass sheets on a vertical rack - with outer casing of glass fibre-polyester to provide protection
Inventor: SCHWIETERT HEINZ
IPC: B65D85/48
Filed: 1973-04-06
Abstract: A device for transporting large glass sheets comprises a vertical supporting-rack which is covered with plastics hoods, pref. glass-fibre reinforced polyester resis, consisting of two side hoods and a lid which binds them. The device is light and therefore does not need a crane for positioning cf. prior PVC sheets.
Patent DE-2342727-A1 (DE)
Title: Music teaching instrument with piano style keyboard - is connected to note generator and individual student panels
Inventor: LADY CHARLES S
IPC: G09B15/00
Filed: 1973-08-24
Abstract: The music teaching instrument is designed to give students familiarity with the keyboard and with music notation, as well as introducing them to the theory of music, including turns, intervals, chords etc. The teacher has an instrument incorporating a piano keyboard and a number of indicator lamps, there being one for each student. The teachers instrument is connected to a means of generating combinations of notes, which the students bear through a loudspeaker. Each student has a panel carrying treble and bass clef staves and two columns of buttons, white and black, which correspond with the keyboard and are linked with it and with an individual earphone for each student.
Patent DE-2342970-A1 (DE)
Title: Alarm system for security-man round - raises alarm if each check point is not cleared within preset time
Inventor: VASQUEZ RESTREPO TULIO
IPC: G07C1/20
Filed: 1973-08-25
Abstract: The application describes a portable unit and the operation of control equipment in conjunction with it. The portable device is an electromechanical and electronic unit in a metal box. It is equipped with a lead and plug for connection to the check points on the round. The check is based on a wheatstone bridge with R.C. limbs. A different R.C. combination is fixed at each checkpoint and the correct R.C. must be connected in the correct sequence to step a toothed wheel in the portable device. Its position is shown in a window in the box. The last check point is connected to the control equipment which checks completion of the round within a preset time and sounds or communicates an alarm if it is exceeded.
Patent DE-2354667-A1 (DE)
Title: Direction-finding aerial system with switchable aerial groups - uses step-switching by stepping relays and electronic arrangements to reduce back-radiation of unused aerials
Inventor: HORNDASCH GEORG
IPC: H01Q3/44
Filed: 1973-11-02
Abstract: The direction finding aerial system with aerials switchable in groups uses the aerial groups with disturbing reflection for a defined working condition of the aerial system. They are altered so that the backward reflection is lowered to a harmless level. The disturbing aerials of the system are disconnected from earth and/or the disturbing part is divided up into so many parts that the backward reflection behaviour which depends on resonant properties disappears. The switching lines required for the activation of the relays/diodes are subdivided in as many parts as the switched-off aerials. The aerial feed lines may be used as one of the switching signal lines.
Patent DE-2357303-A1 (DE)
Title: Solid charge for gas generator - consists of H-shaped cylindrical pressings which burn evenly
Inventor: WOLF SIEGFRIED
IPC: C06D5/06
Filed: 1973-11-16
Abstract: A solid propellant charge for a gas generator in safety devices in vehicles to protect persons in case of accident consists of a number of cylindrical pressings which have an H-section, where the thickness of the outer part and of the centre start are equal. The charge has good mechanical strength, and burns to produce a gas pressure which is approx. constant with time.